Add an 'attempt_reshuffle' argument to finish_add.
Add an 'attempt_reshuffle' argument to finish_add.

This ensures that we don't reshuffle more than once
when we call finish_add twice at the end of a method.

Signed-off-by: Chris Lalancette <281cd07d7578d97c83271fbbf2faddb83ab3791c@gmail.com>

clalancette/pycdlib,clalancette/pyiso